Question

A ballplayer catches a ball 16.3 sec after throwing it vertically upward. If he caught it at the same point he threw it, with what speed did he throw it, and what height did it reach

Answer 1

The speed of a train is reduced uniformly from 572 m/s to 107 m/s while traveling a distance of 900 m. Compute the acceleration and how much further will it travel before coming to rest, if it continues to slow at a constant rate of acceleration?

Answer 2

For the train problem use: \[a= \Delta v/\Delta t\] and for the second part \[v _{f}^{2}=v _{i}^{2}+2ax\]